Crane safety device



March 13, 1934. FEELEY r AL 1,951,088

CRANE SAFETY DEVICE Filed Dec. 31, 1931 2 Sheets-Sheet l [QM/4E0 JFEELEY and DAN/EL LYNCH.

March 13, 1934- E. J. FEELEY ET AL CRANE SAFETY DEVICE Filed Dec. 51,1951 ZSheets-Sheet 2 [meniorsr Eon Hep J FEELEY and DFiN/EL A Y/VCH1%e/f4/fO/77t fl6i Patented Mar. 13, 1934 CRANE SAFETY DEVICE Edward."B'. Feeiey and Daniel Lynch, .loliet, 111., assignors to The AmericanSteel and Wire Company of New Jersey, a corporation of New JerseyApplication December 31, 1931, Serial No. 584,201

3 Claims.

This invention relates to a safety device for attachment to travelingcranes, one of the objects being to prevent the accidental unloading ofan elongated carrier, being moved by such a crane, when the load on thiscarrier unexpectedly shifts.

Having reference to the accompanying drawings, Figure l is a sideelevation of one form of the invention and Figure 2 is an end elevationof Figure l.

The drawings show a traveling crane consisting of a bridge 1 that canrun back and forth, carrying a carriage 2. This carriage lifts throughthe medium of a cable 3, the load in this instance comprising a longcarrier 4 holding bundles of rod 5.

When the crane first started to lift this carrier the bundles wereproperly placed to balance it in a horizontal position. Now, however,these bundles have unexpectedly shifted to the right, while being moved,causing the carrier to leave its horizontal position. Such a conditionis ordinarily quite dangerous because of the possibility of the carriertilting until the bundles are unloaded. This is prevented by means of adepending frame 6 that is fixed to the carriage 2 so as to move with it,and carries a pair of horizontally alined bumpers 7 equaily spaced aboutthe lifting cable 3.

The drawings show the high end of the carrier 4 engaging one of thesebumpers and being thus held against further tilting. A pair of verticalguides 8, having outwardly inclined ends 8 are connected to each end ofthe depending frame 6. A spring 9 is provided for both pairs of verticalguides 8 and adapted to receive a 16, which is connected to each of thebumpers 7. An abutment ii is secured to each of the rods 10 and adaptedto make contact with the outer convolution of the lower ends of thesprings 9.

A pair of plates 12 and 13 are mounted on each pair of vertical guides 8and are suitably apertured to receive the rods 10, the former serving toconfine the abutments 11, while the plates 13 restrict the upwardmovement of the springs 9. It will thus be seen that bumpers '7 will becushioned iency of the springs 9.

shock directed to the through the resil- The invention is particularlyuseful when objects are to be rnoved from one end of a shop to another,as it is then that the crane operator draws the object being lifted upnearly to the bridge.

While a been shown and describ patent statutes, it is to specificexample of the invention has ed in accordance with the be understoodthat it is not intended to limit the invention exactly thereto, exceptas defined by We claim:

the appended claims.

1. In combination with a traveling crane, a crane carriage, a dependingframe fixed to said carriage, guide members provided with outwardlyinclined ends associated with said frame, and resilient bumpers mountedfor movement in said guide members.

2. In combination with a traveling crane, a depending frame fixed to thecarriage of said crane,

guide members having associated with said rod-receiving holes fixeoutwardly inclined ends frame, spaced plates having d to said guidemembers,

a rod extending through the holes in said plates, an abutment fixed tosaid rod, a spring mounted on said rod and in contact with said abutmentand one of said plates, and a bumper portion mounted on the outer endor" said rod.

through the holes in said plates, an abutment fixed to said rod, aspring mounted on said rod and in contact with said abutment and one ofsaid plates, the outer end of said ro members.

and a bumper portion mounted on d and between said guide EDWARD J.FEELEY. DANIEL LYNCH.

